Siemens SINAMICS Series Operating Instructions Manual page 401

9.3.8 Faults and alarms
Displaying faults and alarms
If a fault occurs, the drive displays the fault(s) and/or alarm(s) on the operator panel. Faults
are indicated by means of the red "FAULT" LED lighting up.
The "Fault/alarm overview" also appears automatically in the following two cases:
1. When a fault is registered while the system is ramping up
2. If the first fault is registered on the operation screen
You can use the F1 (Help) function on the screen to call up information about the cause of
the fault and how to remedy it. You can use F5 (Ack.) to acknowledge a stored fault.
Any alarms that are pending are indicated by means of the yellow "ALARM" LED lighting up.
Additionally, a note relating to the cause of the alarm is displayed in the status bar of the
operator panel.
What is a fault?
A fault is a message from the drive indicating an error or other exceptional (unwanted)
status. This could be caused by a fault within the converter or an external fault triggered, for
example, by the winding temperature monitoring function for the motor. The faults are
displayed and can be reported to a higher-level control system via PROFIBUS.
What is an alarm?
An alarm is the response to a fault condition identified by the drive. It does not result in the
drive being switched off and does not have to be acknowledged. Alarms are "self-
acknowledging"; that is, they are reset automatically when the cause of the alarm has been
eliminated.
Displaying faults and alarms
Every fault and alarm is entered in the fault/alarm buffer along with the time at which it
occurred. This time stamp can take two forms:
● Number of days, hours, minutes, and seconds since the AOP was first switched on
(format DDDD: HH:MM:SS) (no "AOP→ Drive" time synchronization)
● System time (format YY:MM:DD HH:MM:SS = Year:Month:Day Hour:Minute:Second),
in cases where a time-of-day master is present in the system (if "AOP → Drive" time
synchronization is active, for example).
You can call up an overview screen that displays the current status of faults and/or alarms
for every drive object in the system by choosing MENU – Fault/alarm memory.
SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A
9.3 Controlling via the AOP30 operator panel
Operation
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